I am sorry, MareStitching class(.h and .cpp) is not provide for free. But you can test the performance by executable files.https://www.amazon.com/clouddrive/share/zOZXmvrYTb4Er0OYg5qezmk24OPKq0znWlZKly4ZC01?ref_=cd_ph_share_link_copyThank you.

Hi, There are two approach.One is to set update time manually.Second is to check matching rate in background processing.Basically, we usually use sift algorithm to find feature and for matching in stitching process.We can know that is time to update when the matching rate is decrease.Thank you.